package net.aizhuoyue;

import java.util.List;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
import org.springframework.context.annotation.Bean;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;


//使用@SpringBootApplication指定这是一个 spring boot的应用程序.
@SpringBootApplication
//第一种写法:第一步extends WebMvcConfigurerAdapter
public class SpringBootDemoApplication extends WebMvcConfigurerAdapter{
/* 第二步
 * @Override
	public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
		super.configureMessageConverters(converters);

		
		 * 1、需要先定义一个 convert 转换消息的对象;
		 * 2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;
		 * 3、在convert中添加配置信息.
		 * 4、将convert添加到converters当中.
		 * 
		 
		//1、需要先定义一个 convert 转换消息的对象;
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        //2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        fastJsonConfig.setSerializerFeatures(
                SerializerFeature.PrettyFormat
        );
        //3、在convert中添加配置信息.
        fastConverter.setFastJsonConfig(fastJsonConfig);
		//4、将convert添加到converters当中.
    	converters.add(fastConverter);
	}*/
	
	@Bean
	public HttpMessageConverters fastJsonHttpMessageConverters() {
		//1、需要先定义一个 convert 转换消息的对象;
		FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
		//2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;
		FastJsonConfig fastJsonConfig = new FastJsonConfig();
		fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
		//3、在convert中添加配置信息.
		fastConverter.setFastJsonConfig(fastJsonConfig);
		//4、将convert添加到converters当中.
		HttpMessageConverter<?> converter = fastConverter;
		return new HttpMessageConverters(converter);
	}
	
	public static void main(String[] args) {
		SpringApplication.run(SpringBootDemoApplication.class, args);
	}
}
